This Dell Windows 10 Pro 64-bit OS Operating System Reinstallation DVD is perfect for those who want to reinstall their operating system. The DVD is sealed and does not come with a key. It is compatible with Windows operating systems and is in DVD format. The brand of the operating system is Dell, making it a reliable choice for your computer needs. This item is perfect for those who are looking for a replacement operating system or want to reinstall their current one.